Heater



Sept 16, 1958 M. MARKEL ETAL HEATER Filed Aug. l, 1957 y lNVENTOR.

M M M .BY mwe- L HEATER Morris lL. Markel, Tonawanda, and CuthbertVGrant, Eggertsville, N. Y., assgnorsV to-Markel Electric lrod ucts,Inc., Buffalo, N.,Y.., a-corporationl of Newk York Application August 1,1957, Serial No., 67,5,68,0

4 Claims. (Cl. 219-39) This invention relates to heater-aand-v moreparticularly to. an electric wall heater having, any enclosed blowermeans.

rll1e-heater of the present invention, is especially Well suited foimounting in a wall whereinthe frontsurface of the heater will besubstantially llush with the surface of the wall. The heater utilizesboth radiant and forced convection heating principles, and among thefeatures which characterize the invention, is the manner of directingair llow through the heater to form two air streams, one of which passesover the rear surface of a reflector and outwardly of the heater, theother of which passes about the heater controls for the cooling thereofduring heater operation. Another feature relates to means for directingthe heater air stream outwardly from the heater to avoid damage to apapered wall surface. Still another feature resides in the arrangementof the control chamber wherein cooling air is jetted downwardly throughopenings formed in the underside of a forwardly projecting nose locatedon the front surface of the heater.

The main object of this invention is to provide an electric heater whichutilizes both radiant and forced convection principles for heating.

Still another object is to provide an electric heater which willautomatically maintain a predetermined room temperature.

Another object of this invention is to provide an electric heaterwherein air llow therethrough is divided into two streams, one forcooling the heater controls, the other of which passes over the rearsurface of a reilector prior to being blown from the heater.

A further object of the invention is to provide an electric wall heaterwherein the air being blown from the heater is deected so that it doesnot blow upon the surrounding wall surface.

These and further objects and features of the invention will become moreapparent from the following description and the accompanying drawingwherein:

Fig. l is a front View of a heater embodying the principles of theinvention;

Fig. 2 is a section View generally as seen along line 2'-2 in Fig. l;

Fig. 3 is a section view generally as seen along line 3-3 in Fig. 2;

Fig. 4 is a section view generally as seen along line 4-4 in Fig. 2; and

Fig. 5 is a section view generally as seen along line 5-5 in Fig. 2.

Referring now to the drawing, numeral 6 identifies a heater unitrepresenting an embodiment of the invention, which heater includes afront panel 7, a wall insert box 8, side panels 9 and a baille panel 11.A reflector 12, having curved sections 13 and 14 extending horizontallywithin the heater, opens unto an opening 16 formed in the front panel 7.Three tie rods are used to maintain the rellector within the box 8. Ascreen, or guard 17 is arranged in the opening 16, the upper endH'latent *ice vof the guard being maintained by the bale panel 11 whilethe lower end is aillxed to the front panel, by fastening means, Such asscrews 18. Extending horizontally Within, and in= spaced relation to thecurved sec,` tions 13 and 14.0f the rellector 12, are electrical heaterelements 19, eachL of which consists of a resistance wire wound upon aceramic core. Y

Located inthe lower region of box 8 is. an electric motor 21, having afan 22 whichfunctions to draw air into the boxk 8, via a grille 23formed in the front panel 7, and to blow the air upwardly behind thereector 12 andfrom where it is directed out of the box through the upperpart ofthe guard 17. A venturiplate 25 is arranged about the fan, 22Afor channeling the incoming air stream. Part vofthe upward flowingairpassesrthrough a hole 24 formed inthe upper surface of the baillepanel 11, andenters a chamber .26` in which control elements 27 and 28are located. Theair stream passes aboutthe control elements, tovtherebycool them,` and leaves, the chamber 26 downwardly via holes 30 formed ina forwardly projecting nose 33, arranged on the front panel 7.

The control element 27 is operable to establish an electrical circuitthrough the heater elements 19 and the motor 21. Control element 28 is athermostatically controlled rheostat operable for completion of theelectrical circuit through the heater elements 19 and electric motor 21.The thermostat control 28 is operated by a liquid filledthermometer-like bulb 29, located in the air stream behind the fan 22.The control element 28 may be set to provide and maintain apredetermined intake air temperature; for example, if the control is setfor say the circuit in the control element 28 will be open when theincoming air stream exceeds said predetermined temperature, to therebydiscontinue operation of the heater unit. However, once the airtemperature drops below the preset temperature, the circuit through thecontrol element 28 will be completed, and heater operation will takeplace.

A pair of brackets 31 are secured to the top and bottom of box 8 wherebythe heater may be mounted within a wall between the studs thereof. Ahole 32 is provided in the top surface of the box 8, which may be usedfor bringing in the power lines for connection to the control elements.

From the foregoing it will be seen that the heater of the invention maybe conveniently installed in a wall, and may be operated forautomatically regulating the air temperature in a room. The arrangementof the air ilow through the heater to form two air streams, one of whichis used for cooling the heater controls, represents an eilicient mannerfor operation of the heater. Other features as described serve tofulfill the objectives as set forth in the beginning of this disclosure.

The foregoing description has been given in detail without thought oflimitation since the inventive principles involved are capable ofassuming other physical embodiments without departing from the spirit ofthe invention and the scope of the appended claims.

What is claimed is:

l. A heater comprising heater elements arranged in a reflector, a blowermeans for moving an air stream through the heater and around therellector on the side opposite the heater elements, control means foroperation of the heater elements and blower means, and means to dividethe air stream into two paths one of which llows past the control means.

2. An electric heater comprising heater elements arranged in areilector, a blower means for moving an air stream through the heaterand around the rellector onA the side opposite the heater elements,control means for operation of the heater elements and blower means, athermostat means for operation of the control means in on the sideopposite the heater elements, a pair of conf trol elements for operationof the heater elements and the motor, one of said control elementsadapted to disrupt ow ofl electric current to the heater elements andmotor when the temperature of the air stream exceeds a predeterminedvalue, and means to divide the air stream into two paths one of whichflows past the control ele ments.

4. An electric wall heater comprising a box, a front panel secured tothe box and being formed to provide an opening having a covering grille,a pair of electrical heater elements horizontally disposed in said box,a relector having curved portions spaced from the heater elements andadapted to reflect heat rays from the heater elements outwardly ,of thebox via the grille covered opening, a'motor having a fan operable formoving an air stream from a venturi opening at the lower part of theheater, past the back of the reflector, and outwardly of the heater viathe grille covered opening, a baille plate for directing the air streamupwardly in the heater, and a pair of electrical control elementsarranged in a chamber formed at the top of the heater, said controlelements adapted for completing electric circuits through the heaterelements and the motor, one of said control elements having a thermostatmeans arranged in said air stream adapted to disrupt the circuit throughthe control element when the temperature of the air stream exceeds apredetermined value, said baile plate being arranged to direct a certainpart of the air stream through' the control element chamber.

References Cited in the le of this patent UNITED STATES PATENTS1,982,139 Kercher Nov. 27, 1934 1,986,350 Logan c Jan. l, 1935 2,707,745Farr et al. May 3, 1955 2,722,594 Kueser Nov. 1, 1955 2,765,393 TheisenL Oct. 2, 1956

